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    <link rel="shortcut icon" type="image/x-icon" href="http://mars3d.cn/favicon.ico" />
    <title>单模型场景(无地球) | Mars3D | 三维地图 | 火星科技 | 合肥火星科技有限公司</title>

    <!--第三方lib-->
    <script
      type="text/javascript"
      src="../lib/include-lib.js"
      libpath="../lib/"
      include="jquery,jquery.minicolors,font-awesome,bootstrap,bootstrap-checkbox,layer,haoutil,admui,turf,mars3d,localforage"
    ></script>

    <link href="css/style.css" rel="stylesheet" />
  </head>

  <body class="dark">
    <!--加载前进行操作提示，优化用户体验-->
    <div id="mask" class="signmask" onclick="removeMask()"></div>

    <div id="mars3dContainer" class="mars3d-container"></div>

    <!-- 面板 -->
    <div class="infoview">
      <table class="mars-table">
        <tr>
          <td>模型URL：</td>
          <td>
            <input id="txtModel" type="text" value="//data.mars3d.cn/3dtiles/qx-simiao/tileset.json" class="form-control" style="width: 500px" />
          </td>
          <td>
            <input type="button" class="btn btn-primary" value="加载模型" onclick="showModel()" />
          </td>
        </tr>
        <tr>
          <td>背景颜色：</td>
          <td>
            <input type="text" id="txtColor" class="form-control" style="width: 100px" value="#363635" />

            <a href="editor.html#g20_onlyModel2" target="_blank" class="btn btn-default">另外一种处理方式</a>
          </td>
          <td>
            <input type="button" class="btn btn-primary" value="视角复位" onclick="flyTo()" />
          </td>
        </tr>
      </table>
    </div>

    <script src="./js/common.js"></script>
    <script type="text/javascript">
      "use script"; //开发环境建议开启严格模式

      var map;
      let tiles3dLayer;

      function initMap(options) {
        var color = $("#txtColor").val();

        //合并属性参数，可覆盖config.json中的对应配置
        var mapOptions = mars3d.Util.merge(options, {
          scene: {
            center: { lat: 33.597401, lng: 119.031399, alt: 514, heading: 0, pitch: -46 },
            showSun: false,
            showMoon: false,
            showSkyBox: false,
            showSkyAtmosphere: false,
            fog: false,
            backgroundColor: color, //天空背景色
            globe: {
              baseColor: color, //地球地面背景色
              showGroundAtmosphere: false,
              enableLighting: false,
            },
            cameraController: {
              zoomFactor: 1.5,
              minimumZoomDistance: 0.1,
              maximumZoomDistance: 200000,
            },
          },
          layers: [
            {
              name: "网格线",
              type: "grid",
              color: "#ffffff",
              alpha: 0.03,
              cells: 2,
              show: true,
            },
          ],
        });
        delete mapOptions.control;
        delete mapOptions.terrain;
        delete mapOptions.basemaps;

        //创建三维地球场景
        map = new mars3d.Map("mars3dContainer", mapOptions);

        $("#txtColor").minicolors({
          position: "bottom left",
          control: "saturation",
          change: function (color) {
            var clr = Cesium.Color.fromCssColorString(color);
            map.scene.backgroundColor = clr; //空间背景色
            map.scene.globe.baseColor = clr; //地表背景色

            // map.setSceneOptions({
            //   backgroundColor: color, //天空背景色
            //   globe: {
            //     baseColor: color, //地球地面背景色
            //   },
            // })

            $("body").css("background", color);
          },
        });

        //历史记录模型地址
        localforage.getItem("g20_onlyModel").then(function (lasturl) {
          $("#txtModel").val(lasturl);
        });
        setTimeout(showModel, 1000);
      }

      function removeLayer() {
        if (tiles3dLayer) {
          map.removeLayer(tiles3dLayer, true);
          tiles3dLayer = null;
        }
      }

      //当前页面业务相关
      function showModel() {
        removeLayer();
        var _url = $("#txtModel").val();
        localforage.setItem("g20_onlyModel", _url);

        tiles3dLayer = new mars3d.layer.TilesetLayer({
          url: _url,
          maximumScreenSpaceError: 1,
          flyTo: true,
        });
        map.addLayer(tiles3dLayer);

        //单击事件
        tiles3dLayer.on(mars3d.EventType.load, function (event) {
          console.log("模型加载完成", event);

          //限定缩放级别
          map.scene.screenSpaceCameraController.maximumZoomDistance = tiles3dLayer.boundingSphere.radius * 5;

          //自动贴地处理
          tiles3dLayer.clampToGround(10);
        });
      }

      function flyTo() {
        tiles3dLayer.flyTo();
      }
    </script>
  </body>
</html>
